乌石W油田储层孔隙结构特征及优质储层预测  

Characteristics of Reservoir Pore Structure and Prediction of High Quality Reservoirs in Wushi W Oilfield

作　　者：招湛杰 郇金来 徐万兴 代百祥 阳中良 ZHAO Zhan-jie;HUAN Jin-lai;XU Wan-xing;DAI Bai-xiang;YANG Zhong-liang(Zhanjiang Branch of CNOOC(China)Ltd.,Guangdong Zhanjiang 524057,China)

机构地区：[1]中海石油(中国)有限公司湛江分公司,广东湛江524057

出　　处：《广州化工》2024年第1期184-186,共3页GuangZhou Chemical Industry

基　　金：“十三五”国家重大科技专项“南海西部海域低渗油藏勘探开发关键技术”(2016ZX05024-007)。

摘　　要：利用铸体薄片、高分辨率扫描电镜、孔隙类型定量分析、高压压汞等实验手段,对北部湾盆地乌石W油田流沙港组三段储层岩石学特征、孔隙结构特征及储层分类进行研究,并进行优质储层预测。结果表明:研究区流三段孔喉结构总体表现为孔径较大,喉道较细的特征,孔隙连通性较差。根据毛管压力曲线形态,可将研究区储层划分为Ⅰ类、Ⅱ_(1)类、Ⅱ_(2)类、Ⅲ类共四种类型,其中Ⅰ类储层为该区优质储层。The petrology characteristics,pore structure characteristics and reservoir classification of the third member of Liushagang Formation in Wushi W Oilfield,Beibu Gulf Basin were studied,and high-quality reservoirs were predicted by means of micro casting thin sections,high-resolution scanning electron microscopy,quantitative analysis of pore types,high-pressure mercury injection and other experimental means.The results indicated that the pore throat structure of the third section of the study area generally exhibited the characteristics of larger pore size and finer throat,with poor pore connectivity.According to the shape of capillary pressure curve,the reservoirs in the study area could be divided into four types:Ⅰ,Ⅱ_(1),Ⅱ_(2) and Ⅲ.Among them,Ⅰ reservoirs were high-quality reservoirs in the area.

关 键 词：孔隙结构 毛管压力 储层分类 储层预测 

分 类 号：P744.4[天文地球—海洋科学] P618.13